/*
Copyright 2024-2025 The Spice.ai OSS Authors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

pub mod delta;
pub mod spark_connect;
pub mod sql_warehouse;

use std::sync::LazyLock;

pub use delta::DatabricksDelta;
pub use spark_connect::DatabricksSparkConnect;
pub use sql_warehouse::DatabricksSqlWarehouse;

const SPICE_USER_AGENT_PREFIX: &str = "SpiceAI_";

static USER_AGENT: LazyLock<String> = LazyLock::new(|| {
    let product = std::env::var("SPICE_PRODUCT_NAME").unwrap_or("OSS".to_string());
    let version = env!("CARGO_PKG_VERSION");
    format!("{SPICE_USER_AGENT_PREFIX}{product}/{version}")
});

#[must_use]
pub fn user_agent() -> &'static str {
    &USER_AGENT
}
